超声波学。手持探头式多普勒胎儿心音检测器。性能要求和测量及报告方法。

Ultrasonics. hand - held probe doppler foetal heartbeat detectors. performance requirements and methods of measurement and reporting.

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目的：探讨高频探头及彩色多普勒超声（C DFI）在肾移植手术后并发症的诊断意义。

Objective To investigate the role of hight-frequency ultrasound and color doppler imaging(CDFI) in early diagnosis of complication following renal transplantation.

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